/* BFD back-end for os9000 i386 binaries. Copyright (C) 1990-2014 Free Software Foundation, Inc. Written by Cygnus Support. This file is part of BFD, the Binary File Descriptor library. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ #include "sysdep.h" #include "bfd.h" #include "libbfd.h" #include "bfdlink.h" #include "libaout.h" /* BFD a.out internal data structures */ #include "os9k.h" /* Swaps the information in an executable header taken from a raw byte stream memory image, into the internal exec_header structure. */ static bfd_boolean os9k_swap_exec_header_in (bfd *abfd, mh_com *raw_bytes, struct internal_exec *execp) { mh_com *bytes = (mh_com *) raw_bytes; unsigned int dload, dmemsize, dmemstart; /* Now fill in fields in the execp, from the bytes in the raw data. */ execp->a_info = H_GET_16 (abfd, bytes->m_sync); execp->a_syms = 0; execp->a_entry = H_GET_32 (abfd, bytes->m_exec); execp->a_talign = 2; execp->a_dalign = 2; execp->a_balign = 2; dload = H_GET_32 (abfd, bytes->m_idata); execp->a_data = dload + 8; if (bfd_seek (abfd, (file_ptr) dload, SEEK_SET) != 0 || (bfd_bread (&dmemstart, (bfd_size_type) sizeof (dmemstart), abfd) != sizeof (dmemstart)) || (bfd_bread (&dmemsize, (bfd_size_type) sizeof (dmemsize), abfd) != sizeof (dmemsize))) return FALSE; execp->a_tload = 0; execp->a_dload = H_GET_32 (abfd, (unsigned char *) &dmemstart); execp->a_text = dload - execp->a_tload; execp->a_data = H_GET_32 (abfd, (unsigned char *) &dmemsize); execp->a_bss = H_GET_32 (abfd, bytes->m_data) - execp->a_data; execp->a_trsize = 0; execp->a_drsize = 0; return TRUE; } /* Finish up the opening of a b.out file for reading. Fill in all the fields that are not handled by common code. */ static const bfd_target * os9k_callback (bfd *abfd) { struct internal_exec *execp = exec_hdr (abfd); unsigned long bss_start; /* Architecture and machine type. */ bfd_set_arch_mach (abfd, bfd_arch_i386, 0); /* The positions of the string table and symbol table. */ obj_str_filepos (abfd) = 0; obj_sym_filepos (abfd) = 0; /* The alignments of the sections. */ obj_textsec (abfd)->alignment_power = execp->a_talign; obj_datasec (abfd)->alignment_power = execp->a_dalign; obj_bsssec (abfd)->alignment_power = execp->a_balign; /* The starting addresses of the sections. */ obj_textsec (abfd)->vma = execp->a_tload; obj_datasec (abfd)->vma = execp->a_dload; /* And reload the sizes, since the aout module zaps them. */ obj_textsec (abfd)->size = execp->a_text; bss_start = execp->a_dload + execp->a_data; /* BSS = end of data section. */ obj_bsssec (abfd)->vma = align_power (bss_start, execp->a_balign); /* The file positions of the sections. */ obj_textsec (abfd)->filepos = execp->a_entry; obj_datasec (abfd)->filepos = execp->a_dload; /* The file positions of the relocation info *** obj_textsec (abfd)->rel_filepos = N_TROFF(*execp); obj_datasec (abfd)->rel_filepos = N_DROFF(*execp); */ adata (abfd).page_size = 1; /* Not applicable. */ adata (abfd).segment_size = 1;/* Not applicable. */ adata (abfd).exec_bytes_size = MHCOM_BYTES_SIZE; return abfd->xvec; } static const bfd_target * os9k_object_p (bfd *abfd) { struct internal_exec anexec; mh_com exec_bytes; if (bfd_bread (&exec_bytes, (bfd_size_type) MHCOM_BYTES_SIZE, abfd) != MHCOM_BYTES_SIZE) { if (bfd_get_error () != bfd_error_system_call) bfd_set_error (bfd_error_wrong_format); return 0; } anexec.a_info = H_GET_16 (abfd, exec_bytes.m_sync); if (N_BADMAG (anexec)) { bfd_set_error (bfd_error_wrong_format); return 0; } if (! os9k_swap_exec_header_in (abfd, &exec_bytes, &anexec)) { if (bfd_get_error () != bfd_error_system_call) bfd_set_error (bfd_error_wrong_format); return NULL; } return aout_32_some_aout_object_p (abfd, &anexec, os9k_callback); } static int os9k_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info ATTRIBUTE_UNUSED) { return sizeof (struct internal_exec); } #define aout_32_close_and_cleanup aout_32_bfd_free_cached_info #define aout_32_find_line _bfd_nosymbols_find_line #define aout_32_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol #define aout_32_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup #define aout_32_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup #define aout_32_get_section_contents_in_window \ _bfd_generic_get_section_contents_in_window #define os9k_bfd_get_relocated_section_contents \ bfd_generic_get_relocated_section_contents #define os9k_bfd_relax_section bfd_generic_relax_section #define os9k_bfd_gc_sections bfd_generic_gc_sections #define os9k_bfd_lookup_section_flags bfd_generic_lookup_section_flags #define os9k_bfd_merge_sections bfd_generic_merge_sections #define os9k_bfd_is_group_section bfd_generic_is_group_section #define os9k_bfd_discard_group bfd_generic_discard_group #define os9k_section_already_linked \ _bfd_generic_section_already_linked #define os9k_bfd_define_common_symbol bfd_generic_define_common_symbol #define os9k_bfd_link_hash_table_create _bfd_generic_link_hash_table_create #define os9k_bfd_link_add_symbols _bfd_generic_link_add_symbols #define os9k_bfd_link_just_syms _bfd_generic_link_just_syms #define os9k_bfd_copy_link_hash_symbol_type \ _bfd_generic_copy_link_hash_symbol_type #define os9k_bfd_final_link _bfd_generic_final_link #define os9k_bfd_link_split_section _bfd_generic_link_split_section const bfd_target i386_aout_os9k_vec = { "i386os9k", /* name */ bfd_target_os9k_flavour, BFD_ENDIAN_LITTLE, /* data byte order is little */ BFD_ENDIAN_LITTLE, /* hdr byte order is little */ (HAS_RELOC | EXEC_P | WP_TEXT), /* object flags */ (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD), /* section flags */ 0, /* symbol leading char */ ' ', /* ar_pad_char */ 16, /* ar_max_namelen */ 0, /* match priority. */ bfd_getl64, bfd_getl_signed_64, bfd_putl64, bfd_getl32, bfd_getl_signed_32, bfd_putl32, bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ bfd_getl64, bfd_getl_signed_64, bfd_putl64, bfd_getl32, bfd_getl_signed_32, bfd_putl32, bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ {_bfd_dummy_target, os9k_object_p, /* bfd_check_format */ bfd_generic_archive_p, _bfd_dummy_target}, {bfd_false, bfd_false, /* bfd_set_format */ _bfd_generic_mkarchive, bfd_false}, {bfd_false, bfd_false, /* bfd_write_contents */ _bfd_write_archive_contents, bfd_false}, BFD_JUMP_TABLE_GENERIC (aout_32), BFD_JUMP_TABLE_COPY (_bfd_generic), BFD_JUMP_TABLE_CORE (_bfd_nocore), BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd), BFD_JUMP_TABLE_SYMBOLS (aout_32), BFD_JUMP_TABLE_RELOCS (aout_32), BFD_JUMP_TABLE_WRITE (aout_32), BFD_JUMP_TABLE_LINK (os9k), BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), NULL, NULL, };